Trolley.



IVI. LEV, Jn.

TROLLEY.

APPLICATION FILED IuLY 22, 1914.

Patented May 25, 1915.

r. /H/m i *HE NDRRIS PETES Co.. FHOTCLITHO.. WASHINGTON. D4 C.

MARK LEV', JR., 0F LOS ANGELES, CALIFORNIA.

TROLLEY.

Specification of Letters Patent.

Patented May 25, 1915.

Application lfiled 111157.22, 1914. Serial No. 852,528.

T0' a'ZZ whom it may concern:

Be it known that I, MARK LEV, Jr., a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented new and useful Improvements in Trolleys, of which the following is a specification.

This invention relates particularly to a novel form of vsupport and electrical contact for a trolley wheel or the like; and the object of my invention includes the provision of a trolley in which means are provided for giving the trolley wheel a long life, for making good electrical contact with the wheel, and for immediate and easy accessibility to the various parts for cleaning, replacements, etc.

I explain the details 0f my invention in the following specication, reference being had to the accompanying drawings, in which I show preferred forms of my invention, and in which,

kFigure 1 is a section showing one form of my improved trolley, Fig. 2 is a section taken as indicated by line 2 2 of Fig. 1, Fig. 3 is a partial section taken as indicated by line 3-3 of Fig. 2, Fig. 4 is a section taken as indicated by line 4-4 of Fig. 1, Fig. 5 is a section similar to Fig. 1 showing another form of my improved trolley.

v In my preferred form shown in Figs. 1 to 4, I have shown a trolley harp at 10, which harp may be of the ordinary and usual configuration except as hereinafter noted. In this form of my device the harp 10 has two arms 11 and 12; and in the arm 12 I mount my contact and shaft carrying head 13 while in the arm 11 I mount a stationary contact plate 14, as is best shown in Fig. 1. The hollow shaft 15 upon which the Vwheel 16 revolves is permanently and rigidly mounted in the head 13 as lshown in Figs.v 1 and 3; and this hollow shaft may be the reservoir for any suitable lubricant which finds exit to the outer surface of the shaft 15 through the lubricating openings 16a. The shaft 15 is rigidly mounted at one end in the head 13 and in the other end'it projects into the opening 17 in the opposite arm 11 of the harp, the shaft being thus rigidly supported when the head is in its normal position as shown in Fig. 1. The wheel 16 is provided with two contact surfaces at the ends of its hub, preferably formed by disks 18, one on each end of the hub, these disks being secured to or incorporated with the wheel in any preferred manner. One of these contact disks presses against the stationary contact plate 14, while the other is engaged by a contact plate 19 which is mountedV on the head 13 in a manner to be hereinafter described. l

lThe head 13 is circular in general configuration and fits into a corresponding circular opening 25 in the harp arm 12. The head has two extensions or lugs 26 with inwardly extending lugs 27 on their outer ends, which lugs 27 are normally adapted to rest in recesses 28 in the arm 12. These recesses 28 arelocated at the ends of circular slot 29;

vand at the other end of these circular slots there are enlargements'30 in the form of apertures through which the lugs 27 may be y a passed when the headv is put in or taken out of normal position. n In order to remove the head from the position shown, it is necessary to press the head inwardly by an amount measured by the depth of the recesses 28, to then rotate the head so as to bring the lugs 27 opposite theapertures 30 and to then pull the head outwardly passing the lugs 27 through the apertures 30. It will particularly be noted that the head cannot be removed from the arm without the initial inward movement of the head toward the trolley wheel in a line parallel to the length of the shaft 15. Suitable spaces and allowances are made at all points for the inward movement of the head and of the shaft 15 for removal in the manner specied.

The contact disk 18 shown at the left in Figs. 1 and 3 is engaged, as hereinbefore noted, by the contact plate 19. This contact plate 19is loosely mounted on a mounting plate 35 secured to the inner Vface of the head 13 in the manner shown, by screws 36, or any other suitable means. The contact plate 19 has extensions 37 and lugs 38 adapted to pass through apertures 39 in the mounting plate 35; and after the lugs are passed through these apertures,4 a rotative movement of the contact plate relative to the mounting plate will pass the extensions 37 into a restricted portion 39a of the apertures 39, so that the contact plate cannot be removed until it is turned back to its original position. I have shown in Fig. 4

that therlugs 38 are slightly larger than they extensions 37. Theextensions 37 are of such size, in -a direction'-circumferentially labout shaft 15, that they pass easily through apertures 39, while the lugs'38 `a'reglarger in'circumferential measure than the apertures 39 in the corresponding dimension; so that -it is necessary to tip the contact plate 19 and the lugs 38 somewhat in order to pass'lthem be accidentally removed while the device is assembled and in operation. It will'be noted that the revolution of the trolley wheel'ftends torotate the contact lplate in the direction A shown by the arrows 'in Figs. 2 and tending to carry .the Vextensions 37 to the positionsshown in Fig. 4 and tending to carry the extensions 26 to the positions shown in Fig. 2. Thus, the rotational tendency is utilizedto hold the zparts in such positions that it is impossible for any of them to disconnect from the other parts.`

It will vbe Ynoted in Fig. 1 vthat the contact plate 19 has va certain Yamount of movement parallel to the shaft 15; that is, the contact plate isfloosely mounted on the mounting plate-35 so as toallow a slight relativemovement. Afspring recess 4Q is formed in the head 13 and afspringcl therein is confined between the outer wall '13l of the head and aV washer 42, which Washer "presses against'the lugs 38 ofthe contactplate 19, thus pressing the contactp'late into direct and efficient contact with the contact disk 18 on the end of the wheel hub. At the same time this spring 41 presses outwardly onithe head so as, to hold .itsy lugs 27 in the recesses 28. This single spring performs 7two functions, pressing the head outwardly to yhold it in .proper position and Ypressing the contact ,plate inwardly to vhold it into proper engagement with the contact disk 18 of the wheel. The wheel itself is pressed to the right in Fig.k 1 by the action of the spring so that its other contact disk 18 is pressed into proper engagement with the stationary permanent contact plate 14 on the arm 11 of the harp.

A F rom the foregoing the fundamental features of my invention may be clearly understood. The minor structural features thereof may be varied according to conditions. I haver shown a typical variation of my invention in Fig. 5, consisting primarily of the provision of two heads 13, each constructed in all essentials like the-head1?) shown in Fig. 1 and each carrying one half 15a of the complete shaft fork the trolley wheel r16. Each of the heads is removable as in the form shown in 5,"whereas in Fig. v1 only 'In other words, i althoughl provide for easy removalof the 'i contact plate when it is desired toV take vthe device apart, it is Vimpossible that it should one` `side yis provided with a removable head andthe whole shaft is removed with-that one head.

l Among other features, I wish to particularly draw attention to the fact that my imley is simple in its construction and that it vaiords means forproviding long life for the wheel and providing good electrical contact therewith and for providing easy and-immediate access to any and all of the parts.

Having'described my inventiom'claim i' '1. The,combination o'f aV wheel and supporting 4frame there'for, a stationary removable contact carrying he'admounted 'on the frame and removable therefrom only by' movement'toward the wheel, fa contactplate movably mounted in the xhead vand adapted to Vpress against the wheel, and a springpin thevhead exerting 'force outwardly on 'the head away from 'the wheeland inwardly onthe contact plate toward the wheel.A

2. The combination ofa wheel and 'a sup# porting frame therefor, a stationary {removable contact and shaft carryingheadmounted in the frame and removable 'therefrom only 4by movement towardthe wheel, a-shaft for the wheel carried'by said head, a contact plate mounted in the head with freedom Sto move with reference tothe head to and from said wheel and adapted to lpress"againstfthe wheel, and a spring Vin the `headconfined between vthe headV and said contact plate and c exerting force outwardly on 'the 'head away from the wheel and -inwardlfyonlthe IContact plate toward the wheel.

A3. The combination-of a'wheel and 'a supportingr'frame therefor, a Vstationary 'removable contact4 carrying 'head mounted in Vthe frame, said frame having slots therein with recesses extending outwardly away from the wheel, lugs on said headadapted to pass through said slots and fit into said recesses,

the lugs being removable 'from the'recesses only by inward movement ofthe 'head toward the wheel, a Contact plate mounted .in the lhead with freedom to move with reference tothe head `to and from the wheel and adapted to press against the wheel, fand a spring confined Vbetween the head and 'the contactplate'exerting force inwardly on the contactp'late to press 4it against the wheel and outwardly on the 'head to press `itaway from lthe wheel.

4L. The combination of a bifu'rcat'ed frame, a wheel shaft removably mounted at'one'end in one of the furcations of the frame, aV wheel on said shaft between the furc'ations, a removable shaft and contact carrying head mounted in the other furca'tion, 'the other end of theshaftbeing rigidlymounted in said head, said head being removable l'froml said frame furcation only by movement inwardly toward the wheel, a stationary contactV plate mounted on the one furcation against which the wheel may press, another contact plate mounted in said head and 'movable with reference thereto to and from the wheel, and a single spring means for pressing outwardly on the head and inwardly on said contact plate.

5. The combination of a bifurcated frame, a wheel shaft removably mounted at one end in one of the furcations of the frame, a wheel on said shaft between the furcations, a removable shaft and contact carrying head mounted in the other furcation, the other end of the shaft being rigidly mounted in said head, said frame furcation having a slot therein with a recess extending outwardly away from the wheel, a lug on the head extending through said slot and resting in said recess, the lug being removable from the recess only by inward movement of the ,head toward the wheel, a contact plate mounted in the head with freedom of movement with reference thereto to and from thewheel, said plate adapted to be pressed into contact with the wheel, yand a spring confined between the head and the contact plate exerting force inwardly on the Contact plate to press it against the wheel and outwardly on the head to press it away from the wheel.

6. The combination of ra wheel and a supporting frame therefor, a stationary removable head on the frame, a shaft for said wheel rigidly mounted on and supported by said head, said frame having a slot and a recess extending away from said wheel, a lug on the head adapted to pass through the slot and rest in said recess so that removal of the lug from the recess requires movement of the head parallel to the wheel shaft toward the wheel, and a contact plate mounted in the head with freedom of movement relative thereto to and from the wheel, and a spring confined between the head and the contact plate pressing the contact plate inwardly toward the wheel and pressing the head outwardly away from the wheel.

In witness that I claim the foregoing I have hereunto subscribed my name this 14th day of July 1914.

MARK LEV, JR.

Witnesses E. H. BARKELEW, DRUE L. HOFFMAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

